Mineral-lode tracer.



No. 628,32l. Patented July 4, I899.

A. n. HEYLAND & J.v n. GRAY. MINERAL LODE TRACER.

(Application filed Dec. 18, 1898.)

(No Model.)

FIG.2.

ATTORNEYS.

INVENTg /Z W yjzi 1);; 5m Farms :0, FHOTO LlTHO" WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

ALFRED ROWLEY HEYLAND AND J OHN HAMILTON GRAY, OF KASLO, CANADA.

MlNERAL-LODE TRACER.

SPECIFICATION forming part of Letters Patent No. 628,321, dated July 4,1899. Application filed DecemberlS, 1898. Serial No. 699,177. (Nomodel.)

To all whom it may concern:

Be it known that we,ALFRED ROWLEY HEY- LAND and J ornv HAMILTON GRAY, ofKaslo,

scribed that will be simple, durable, eco-' nomic, accurate, and light.I

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claim.

Reference is to be had to the accompanying drawings, forming a part ofthis specification,

in which similar characters of reference indi-- cate corresponding partsin all the figures.

Figure 1 is a side elevation of the instrument represented as set on thedip and plane of the Vein or lode. Fig. 2 is a plan view of theinstrument, and Fig. 3 is an edge view of the body portion of theinstrument.

The instrument proper consists of a standard A, provided with anenlarged base B, the said base having formed at its top a pointer 10,which extends upward parallel with the standard A for any suitabledistance, An arc plate 0 is carried by the standard A, and thecylindrical portion of the arc is adapted to have movement in the spacebetween the standardAand pointer 10, the are being held in adjustedposition by a set-screw 11, located in said standard opposite saidpointer, as

shown in Fig. 0. The are is pivoted to the upper portion of the standardA by means of a suitable pin 12, located at the central portion of itsstraight edge, and a scale of degrees 13 is produced at the cylindricaledge of the are upon that surface which faces the pointer, the scale ofdegrees reading, preferably, from naught at the center of the arc toabout ninety degrees at the ends, the scales reading in oppositedirections from the cipher.

A plate 14, preferably circular, is secured upon a projection 15 fromthe central portion of the straight edge of the arc, and a second andsimilar plate 16 is mounted -to turn on the plateattached to the arethrough the medium of a pivot pin or screw 17, which passes through theupper plate into the lower one. An arm 18 is secured to the upper plate16, the pivot-pin 17 passing through the central portion of the arm 18,and the arm 18 is provided at each of its ends with a sight 19, and nearone end a casing 20 is located upon the upper surface of the arm, beingadapted to hold a leveling instrument 21, or the said levelinginstrument may be attached directly to the said arm.

The base 13 of the standard A is made hollow in order to receive a stem22, attached to a ball 23, which ball is mounted to turn in a socket 24,and the socket 241.- is preferably attached to the top plate of a tripod25 or other support.

D represents the vein or lode, E the hanging wall of the vein or lode,and F the footwall of said vein or lode, as shown in Fig. 1..

In operation the standard A is set plumb through the medium of theleveling instrument 21, as shown in dotted lines in Fig. 1. Next byturning the ball 23 in its socket 24: the arc O is set in a planeperpendicular to the lode, as illustrated, and then the arc is swung onits pivot 12 until the pointer 10 indicates on the graduation 13 anangle-sixty degrees, for example-corresponding to the dip of the lode.The are is then secured in its adjusted position by means of thesetscrew 11. The arm 18 can now be turned on its axis 17, and it willmove on the same plane as the vein or lode, enabling said vein or lodeto be located at points where it is not located above the pointer, thesaid are exa leveling instrument carried by the sighttending in thespace between the pointer and arm, substantially as described. theadjacent portion of the bodyof the standard, a set-screw arranged in thebody of the 5 standard opposite the pointer and arranged to engage saidare, a sight-arm carried by the Witnesses:

are centrally and mounted to rotate about GEORGE E. MARTIN,

an axis perpendicular to that of the are, and DUNCAN O. GARMICHAEL.

